|(networking)||Domain Name System - (DNS) A general-purpose distributed, replicated,
data query service chiefly used on Internet for translating
hostnames into Internet addresses. Also, the style of
hostname used on the Internet, though such a name is
properly called a fully qualified domain name. DNS can be
configured to use a sequence of name servers, based on the
domains in the name being looked for, until a match is found.|
The name resolution client (e.g. Unix's gethostbyname() library function) can be configured to search for host information in the following order: first in the local /etc/hosts file, second in NIS and third in DNS. This sequencing of Naming Services is sometimes called "name service switching". Under Solaris is configured in the file /etc/nsswitch.conf.
DNS can be queried interactively using the command nslookup. It is defined in STD 13, RFC 1034, RFC 1035, RFC 1591.
BIND is a common DNS server.
Info from Virtual Office, Inc..